You answer:

Actually, there are different solutions and sometimes you don't even have to integrate anything. First of all, I recommend you to learn about smart contract security audit provided by the Pessimistic team, as it is a unique combination of manual and automated auditing of your project with a deep dive into the code. Conveniently, only you will get the results of the audit, which usually lasts from one week to a month, so everything is more than confidential.